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Sagot :
Answer:
27 units squared
Step-by-step explanation:
First, we find the surface area of one of the triangles.
(3*3*0.5)
4.5
Next, we find the surface area of all of the triangles.
(4.5*4)
18
The next step is to find the surface area of the square.
(3*3)
9
The last step is to add the surface areas of the square and triangles together.
(18+9)
27
The surface area of the entire shape is going to be 27 units squared.
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